摘要:
一维前缀和 #include <iostream> using namespace std; const int N = 1e5 + 10; int a[N], b[N]; int main() { int n, m, l, r; cin >> n >> m; for (int i = 1; i < 阅读全文
摘要:
#include <iostream> using namespace std; const int N = 10; int n; void dfs(int u, int nums[], bool st[]) { if (u > n) { for (int i = 1; i <= n; i ++ ) 阅读全文